Beam directionality errors

Patent metadata

Field	Value
Publication number	US-12470270-B2
Application number	US-202217724550-A
Country	US
Kind code	B2
Filing date	Apr 20, 2022
Priority date	Apr 22, 2021
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

An apparatus may include circuitry configured for providing first data indicative of a first relative angle-of-arrival measurement between a first base station and a second base station, from the position of a user device, based on angle-of-arrival measurements. The apparatus may also include circuitry configured for providing second data indicative of first and second angle-of-departure measurements, each measurement indicative of an angle between the user device and the other base station of the first set of base stations from the position of the respective first and second base stations based on a plurality of beams transmitted from the respective base station to the user device. The apparatus may also include circuitry configured for determining a beam directionality error associated with at least one of the first and second base stations based on the first relative angle-of-arrival measurement and the first and second angle-of-departure measurements.

First claim

The invention claimed is:

1 . An apparatus, comprising circuitry including at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to perform at least the following:
providing first data indicative of a first relative angle-of-arrival measurement between a first set of base stations, including a first base station and a second base station, from a position of a user device, based on angle-of-arrival measurements made at the user device; providing second data indicative of a first angle-of-departure measurement indicative of an angle between the user device and the second base station of the first set of base stations from a position of the first base station, the second data also indicative of a second angle-of-departure measurement indicative of an angle between the user device and the first base station of the first set of base stations from the position of the second base station; and determining a beam directionality error associated with at least one of the first or second base stations, wherein the determining the beam directionality error is based on the first relative angle-of-arrival measurement and the first and second angle-of-departure measurements.

2 . The apparatus of claim 1 , wherein the at least one memory stores instructions that, when executed by the at least one processor, causes the apparatus to perform determining the beam directionality error based on a sum of the first relative angle-of-arrival measurement and the first and second angle-of-departure measurements equating to a value different than substantially 180 degrees.

3 . The apparatus of claim 1 , where the at least one memory stores instructions that, when executed by the at least one processor, causes the apparatus to perform determining which of the first and second base stations of the first set of base stations has the beam directionality error.

4 . The apparatus of claim 3 , wherein the at least one memory stores instructions that, when executed by the at least one processor, causes the apparatus to perform:
identifying a second set of base stations comprising a selected one of the first set of base stations and a third base station; providing third data indicative of a second relative angle-of-arrival measurement between the second set of base stations from the position of the user device based on angle-of-arrival measurements made at the user device; providing fourth data indicative of third and fourth angle-of-departure measurements, each measurement indicative of an angle between the user device and an other base station of the second set of base stations from the position of the respective base station based on a plurality of beams transmitted from the respective base station to the user device; and determining that a non-selected one of the first set of base stations has the beam directionality error based on the second relative angle-of-arrival measurement and the third and fourth angle-of-departure measurements.

5 . The apparatus of claim 4 , wherein the at least one memory stores instructions that, when executed by the at least one processor, causes the apparatus to perform determining that the non-selected one of the first set of base stations has the beam directionality error based on a sum of the second relative angle-of-arrival measurement and the third and fourth angle-of-departure measurements equating to substantially 180 degrees.

6 . The apparatus of claim 1 , wherein the first data is computed at the user device based on an average of multiple relative angle-of-arrival measurements between the first and second base stations.

7 . The apparatus of claim 6 , wherein the first data is computed at the user device based on an average of multiple relative angle-of-arrival measurements from different respective sets of base stations.

8 . The apparatus of claim 7 , wherein the multiple relative angle-of-arrival measurements comprise the first relative angle-of-arrival measurement and a second relative angle-of-arrival measurement from a second set of base stations which comprises a selected one of the first set of base stations and a third base station.

9 . The apparatus of claim 1 , wherein the apparatus comprises the user device.

10 . The apparatus of claim 9 , wherein the at least one memory stores instructions that, when executed by the at least one processor, causes the apparatus to perform generating the second data based on received reference data from a location management system of a radio network, the reference data indicative of respective geographic locations of the first and second base stations and directional information for the plurality of beams transmitted by each of the first and second base stations.

11 . The apparatus of claim 10 , wherein the at least one memory stores instructions that, when executed by the at least one processor, causes the apparatus to perform: identifying a non-line-of-sight condition associated with one or more of the beams transmitted by the first and second base stations, and disregarding said one or more beams for determining the first and second angle-of-departure measurements.

12 . The apparatus of claim 9 , wherein the at least one memory stores instructions that, when executed by the at least one processor, causes the apparatus to perform computing, responsive to determining a beam directionality error for one of the first and second base stations, an updated position of the user device.

13 . The apparatus of claim 1 , wherein the apparatus comprises a location management function of a radio network, the location management function performing the providing the first data, the providing the second data, and the determining the beam directionality error.

14 . The apparatus of claim 13 , wherein the at least one memory stores instructions that, when executed by the at least one processor, causes the apparatus to perform receiving the first data from the user device and for receiving reference signal received power information from the user device for the plurality of beams of each of the first and second base stations for computing the second data indicative of the first and second angle-of-departure measurements.

15 . The apparatus of claim 1 , wherein the first angle-of-departure measurement is indicative of the angle between the user device and the second base station of the first set of base stations from the position of the first base station based on a plurality of beams transmitted from the first base station to the user device, and wherein the second angle-of-departure measurement is indicative of the angle between the user device and the first base station of the first set of base stations from the position of the second base station based on a plurality of beams transmitted from the second base station to the user device.

16 . A method comprising:
providing first data indicative of a first relative angle-of-arrival measurement between a first set of base stations, including a first base station and a second base station, from a position of a user device, based on angle-of-arrival measurements made at the user device; providing second data indicative of a first angle-of-departure measurement indicative of an angle between the user device and the second base station of the first set of base stations from a position of the first base station, the second data also indicative of a second angle-of-departure measurement indicative of an angle between the user device and the first base station of the first set of base stations from the position of the

Assignees

• Nokia Technologies Oy

Inventors

• Michalopoulos Diomidis
• Barbu Oana-Elena
• Keating Ryan
• Vejlgaard Benny

Classifications

• H04B7/086 Primary

  using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming · CPC title

• H04B7/0652

  Feedback error handling · CPC title

• H04B7/0408

  using two or more beams, i.e. beam diversity · CPC title

• H04B7/0617 Primary

  for beam forming · CPC title